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-   '99 & up Upgrades and Aftermarket - 7.3L Engine (https://www.thedieselstop.com/forums/f25/)
-   -   Dp Tuner..with 35's and 3.73's (https://www.thedieselstop.com/forums/f25/dp-tuner-35s-3-73s-351130/)

z21ranger 06-13-2013 05:30 PM

Dp Tuner..with 35's and 3.73's
 
Currently running a stock 2001 7.3 truck on 325/60/18s, towing 5-6k pounds regularly.

Have a DP tuner F5 on the way with 60/80 econo and 60/80 tow tunes.

Gauges are in the garage waiting to be installed with chip. 4 inch exhaust and AFE air will follow very shortly.

My question is how will the truck tow if I go to 35's? Its okay on 33's in stock form. Don't want to lose that performance with 35's. Will the tunes make up for the loss of gear ratio with the 35's? I'm not interested in regearing, would just stay with 33's if I lose too much towing power. Thanks

RT 06-13-2013 06:43 PM

422 Attachment(s)
I believe your engine will handle it just fine- I think your issue will be the transmission - did you tell Jody what tire size / gearing combo you will be running? At least he could adjust the shift points.


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z21ranger 06-13-2013 06:52 PM

Didnt talk with Jody, didn't think about it. That was not the brightest thing I've done this week.:icon_rolleyes: I guess if its horrible I can send the chip back to have it tweaked.

What are your thoughts on the transmission?

RT 06-13-2013 07:03 PM

422 Attachment(s)
Make sure and upgrade to the 6.0 cooler. Probably shouldn't try towing a 5th wheel like that, but occasional 6,000 lbs. will probably be ok.


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Dan V 06-14-2013 07:39 AM

Quote:

Originally Posted by z21ranger (Post 2516314)
Currently running a stock 2001 7.3 truck on 325/60/18s, towing 5-6k pounds regularly.

Have a DP tuner F5 on the way with 60/80 econo and 60/80 tow tunes.

Gauges are in the garage waiting to be installed with chip. 4 inch exhaust and AFE air will follow very shortly.

My question is how will the truck tow if I go to 35's? Its okay on 33's in stock form. Don't want to lose that performance with 35's. Will the tunes make up for the loss of gear ratio with the 35's? I'm not interested in regearing, would just stay with 33's if I lose too much towing power. Thanks

I also have a an '01...mods listed in my sig. I think you'll be fine with the smaller loads 5-6k lbs with.

I pull double that with mine and run 265/75r-16 (32") and can state....I'm wishing for 4:10's. I'd like to have about 2000rpm at 65 with the load I pull....or more power. :sneaky:

I went here Gear Ratio Calculator and inserted some info.

At 65mph with 35's you should have about 1670 rpms. With 32's it will be about 1820.

My 80Hp tow tune is really sweet. Jody does/did a great job on the shift points and downshift points.

z21ranger 06-14-2013 06:37 PM

Thanks for the info guys! I got the DP Tuner F5 chip in the truck! What an AMAZING difference! The tunes are smooth and powerful, idles smoother, shifts are firm and smooth! What an awesome updgrade! Thank you DP Tuner!:thumbsup:

[email protected] 06-17-2013 01:24 AM

Sorry, I did not see this thread until now.

Glad you are happy with the chip! :thumbsup:


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